OO Mee a eee mM ee eee a me _ NE et ae ee Pa NT et 
BOTANICAL OBSERVATIONS ON THE AZORES. 189 
margin of the Lagoa to the mouth of the Grotto do Inferno, where 
it is found in water only 3 meters deep, associated with Potamoge- 
ton and Myriophyllum. It is interesting to observe that although 
the Lagoa Verde (or Pequena) is connected with the Lagoa Grande 
by an open channel from the bay where these Characeae occur, 
neither species has yet been observed in the former lake, by Cap- 
tain Chaves, to whom this information is due, though the Myrio- 
phylium is there abundant. On the general characters and the 
fauna of these lakes, see Barrois, Recherches sur la faune des 
eaux douces des Agores. Lille. 1896, 
F LORIDEAE. 
CORALLINA OFFICINALIS, L. Seubert 11; Drouet 222. 
JANIA RUBENS, Lamx. 
Corvo (1400, a, on Padina). Graciosa (1400, on 
Zonaria ). 
J. CORNICULATA, Lamx. Seubert 11; Drouet 222. 
MELOBESIA PUSTULATA, Lamx. 
Terceira (1402). 
PEYSSONNELIA SQUAMARIA, Decn. 
Terceira (1403). 
ScCHIZYMENIA OBOVATA, J. Ag. 
Corvo (1408). 
S. unpuxata, J. Ag. 
Terceira (1419). 
Several specimens with cystocarps. They agree well with the 
descriptions in microscopic structure, and the more perfect speci- 
mens have the habit shown in pl. iii. of Agardh’s Oefver de Capska 
arterna of slaegtet Iridaea. The occurrence of this species from 
the Cape of Good Hope in this region is interesting. 
HALYMENIA RENIFORMIS, Ag. Seubert 10; Drouet 221. 
CERAMIUM, sp. 
Terceira (1404, on Codium tomentosum. ) 
This small species lining the fronds of Codium tomentosum has 
much external resemblance to C. codicoia, J. Ag., growing on the 
same species on the coast of California. The specimens from 
Terceira had neither tetraspores nor cystocarps. The nodes were 
completely corticated throughout and the structure of the sterile 
plant resembles more that of C. rubrum than that of C. codicola. 
It may perhaps be the alga described by Grunow under the name of 
C. rubrum var. Liebetruthii, Grun. in Piccone Crociera del Corsaro, 
p. 55. 
